CVE-2021-26628 MaxBoard XSS and File Upload Vulnerability
Attackers can exploit XSS to steal admin privileges and upload arbitrary files disguised as images in MaxBoard.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-26628?
CVE-2021-26628 is a high-severity cross-site scripting vulnerability in No Vendor Information MaxBoard, published on 26 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.
Which versions are affected by CVE-2021-26628?
It affects 1 product.
Products include Maxb Maxboard.
How do I fix CVE-2021-26628?
No fix has been published for CVE-2021-26628 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-26628 being exploited?
There is no known exploitation of CVE-2021-26628 in the wild and no public exploit code.
Other vulnerabilities in No Vendor Information MaxBoard
Sources
Also known as GHSA-4hqp-qgvw-892g.